A powerful architecture & Construction theme. Construct your website in the perfect Ratio.
Alienum phaedrum torquatos nec eu, vis detraxit periculis ex, nihil expetendis in mei. Mei an pericula

Aluminium French Doors Peterborough


Klosen / Aluminium Doors / Aluminium French Doors

Aluminium Sliding Doors with steps and bushes in background
lounge area with doors open to lawn and trees
External view of timber slimline bifold doors


Modernise your home with our sleek, refined and elegant range of slimline aluminium French doors.

Available in a vast array of colours, it’s easy to find the perfect door with Klosen. We only work with industry-leading manufacturers and offer a 10-year guarantee on all of our installations, so you know you’ll be making a sound investment.

Interested in learning more? Download a brochure or request your free quotation today.

Why Choose Slimline Aluminium French Doors?

Like our wider range of aluminium windows and doors, the French doors we offer are among the very best on the market. Not only do they look sophisticated and modern, their beauty is more than skin deep.

Modern aluminium doors are exceptionally efficient, thanks to innovations like polyamide thermal barriers. You can expect your home to feel cooler in the summer and warmer in the winter thanks to the ingenious technology built into each and every door.

Another benefit of aluminium is its strength and resilience. It won’t rust, rot or decay like many other materials, for starters; the frames themselves should last for decades. Their strength also allows the frames to be thinner than usual without compromising on intrusion protection. Need a little inspiration? Take a look at some of our recent installations below.

Brands We Work With

If you’re considering choosing aluminium French doors, you’ll want to be sure that you’re making a sound investment. That’s why we’re very selective about the door manufacturers we work with. Our door manufacturers are among the very best in the industry, renowned for their commitment to innovation and uncompromising designs. Learn more about each of them below, or download a brochure today.

Contact Us
Senior Architectural Systems Logo
Cortizo Logo

Our Customer Reviews

Great Price & Quick Delivery

This company have been amazing and came to our rescue when another company let us down repeatedly over a period of 4 months during our building work. We got a great price, a quick delivery time and the same product but this time with lovely fitters who knew exactly what they were doing. Now we will will have a warm house for christmas HOORAY !! We went for 3 large sliding doors and the quality of the product is excellent . Many thanks to Audrey Cieran and the team I would recommend highly
- Esther Young


Delighted with the product and the service provided by Klosen. The installation team were excellent and very helpful.
- Sara Hyem

Very Happy

We’ve been very happy with the work Klosen recently completed for us. They installed a variety of windows and sliding doors for us on our new build project. All of the information we requested early on was provided promptly and they were great with our architect. Very happy with the end result and the colour they helped us chose.
- Sarah Munton


Spanish manufacturer Cortizo specialises exclusively in aluminium products and has decades of experience working with the material. Its door and window designs boast ultra-thin frames and sleek, sophisticated design details, making them arguably the most visually appealing on the market.

Find Out More
4 Pane Slimline Sliding Doors

10 Year Guarantee

We offer a 10 year guarantee on all aluminium profiles and 25 years for the powder coating element

Thermal Efficiency

Stay warm in the winter and cool in the summer whilst cutting down on energy bills

Complete Flexibility

Our team are flexible throughout the entire process, including the design and installation of windows

25+ Years Experience

Klosen have over 25 years experience working with designers, architects and homeowners

Senior Architectural Systems

Doncaster-based Senior Architectural Systems is without doubt one of the sector’s leading brands. It’s particularly well known for its track record of innovation. It was the first company to offer a no-quibble guarantee on powder coated finishes and the first to introduce the revolutionary polyamide thermal break.

Find Out More
External view of timber slimline bifold doors


Back in January of 2021, we had the privilege of working with the owners of this stunning Dutch barn-inspired home, which would subsequently go on to be featured on an episode of the popular TV series Grand Designs. We supplied and installed a range of Cortizo windows and doors, providing the ideal finishing touch to this out-of-this-world property.

No matter the scope of your project, there really is no job too big or too small for the team at Klosen.

Find Out More

Senior Architectural Systems Specifications

Typical sizes:
Width (mm)

Height (mm)
x 1500

Thickness: 28mm – 50mm

Air Permeability: 600 Pa
Water Tightness: 600 Pa
Wind Resistance: 2400 Pa

Residential CEN Standard:
1230 x 1480:
U-values as low as 0.73 W/m2K

Tested to PAS24, BS6375-2 and BS6375-3

Typical sizes:
Width (mm)

Height (mm)
x 1400

Thickness: 28mm – 44mm

Air Permeability: 600 Pa
Water Tightness: 600 Pa
Wind Resistance: 1600 Pa

Residential CEN Standard:
28mm Double Glazed Unit, 44mm Triple Glazed Unit
1230 x 1480:
1.5 W/m2K 1.1 W/m2K

Tested to PAS24, BS6375-1, BS6375-2 and BS6375-3

Areas We Cover

We typically complete installations within a 60-mile radius of our headquarters in Market Deeping, Lincolnshire. Destinations we cover include Peterborough, Bourne, Stamford, Huntingdon and London.

Why Choose Klosen?

  • Why Choose Klosen?
  • Over 25 years of experience
  • Five-star reputation
  • 10 year guarantee on all work as standard
  • No project is too big or small
  • Experience working on high-profile projects, including a Grand Designs home and the ABBA Arena in London
Request A Quote


How expensive are slimline aluminium French doors?

Aluminium doors tend to be more expensive than PVC or wood-framed equivalents. We offer free quotations, so please don’t hesitate to get in touch for an exact figure.

Is the installation process any different from PVC or wood-framed doors?

No, the process works exactly the same way.

What colours are your doors available in?

Besides the usual assortment of neutral tones (like white, silver, grey and black), we can offer French doors in hundreds of powder coated RAL colours.

Get in touch with us today to receive your free quotation!